260866493 has 2 divisors, whose sum is σ = 260866494. Its totient is φ = 260866492.

The previous prime is 260866471. The next prime is 260866499. The reversal of 260866493 is 394668062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220136569 + 40729924 = 14837^2 + 6382^2 .

It is a cyclic number.

It is not a de Polignac number, because 260866493 - 2⁶ = 260866429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260866499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130433246 + 130433247.

It is an arithmetic number, because the mean of its divisors is an integer number (130433247).

Almost surely, 2^260866493 is an apocalyptic number.

It is an amenable number.

260866493 is a deficient number, since it is larger than the sum of its proper divisors (1).

260866493 is an equidigital number, since it uses as much as digits as its factorization.

260866493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 260866493 is about 16151.3619549560. The cubic root of 260866493 is about 638.9586687315.

The spelling of 260866493 in words is "two hundred sixty million, eight hundred sixty-six thousand, four hundred ninety-three".